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(parent: 97093c3) | patch
s390/pci_dma: handle dma table failures
authorSebastian Ott <sebott@linux.vnet.ibm.com>
Mon, 26 Oct 2015 10:19:13 +0000 (11:19 +0100)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Mon, 9 Nov 2015 08:10:49 +0000 (09:10 +0100)
commita9be675b430e8c0a604c71d218198e0f48236ae8
treea04d86f83e773731272cf299d85069f4a66bc732tree | snapshot
parent97093c350c678dafff4ed0dd26038e5580c88dafcommit | diff
s390/pci_dma: handle dma table failures

We use lazy allocation for translation table entries but don't handle
allocation (and other) failures during translation table updates.

Handle these failures and undo translation table updates when it's
meaningful.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
arch/s390/include/asm/pci_dma.h diff | blob | history
arch/s390/pci/pci_dma.c diff | blob | history
drivers/iommu/s390-iommu.c diff | blob | history
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